HS-1825AEH Datasheet, PDF (1/3 Pages) Intersil Corporation – Radiation Hardened High-Speed, Dual Output PWM

Radiation Hardened High-Speed, Dual Output PWM
HS-1825ARH, HS-1825AEH
The Radiation Hardened HS-1825ARH, HS-1825AEH Pulse
Width Modulator is designed to be used in high frequency
switched-mode power supplies and can be used in either
current-mode or voltage-mode. It is well suited for single-ended
boost converter applications.
Device features include a precision voltage reference, low
power start-up circuit, high frequency oscillator, wide-band
error amplifier, and fast current-limit comparator. The use of
proprietary process capabilities and unique design techniques
results in fast propagation delay times and high output current
over a wide range of output voltages.
Constructed with the Intersil Rad Hard Silicon Gate (RSG)
Dielectric Isolation BiCMOS process, the HS-1825ARH,
HS-1825AEH has been specifically designed to provide highly
reliable performance when exposed to harsh radiation
environments.
Specifications for Rad Hard QML devices are controlled by the
Defense Logistics Agency Land and Maritime (DLA). The SMD
numbers listed below must be used when ordering.
Detailed Electrical Specifications for the HS-1825ARH,
HS-1825AEH are contained in SMD 5962-99558. That
document may be easily downloaded from our website.
www.intersil.com/
Features
• Electrically Screened to DLA SMD # 5962-99558
• QML Qualified per MIL-PRF-38535 Requirements
• Radiation Environment
- Maximum Total Dose. . . . . . . . . . . . . . . . . . . . 300 krad(SI)
- Vertical Architecture Provides Low Dose Rate Immunity
- DI RSG Process Provides Latch-Up Immunity
• Low Start-Up Current . . . . . . . . . . . . . . . . . . . . . . . 100µA (Typ)
• Fast Propagation Delay . . . . . . . . . . . . . . . . . . . . . . . 80ns (Typ)
• 12V to 30V Operation
• 1A (Peak) Dual Output Drive Capability
• 5.1V Reference
• Undervoltage Lockout
• Programmable Soft-Start
• Switching Frequencies to 500kHz
• Latched Overcurrent Comparator with Full Cycle Restart
• Programmable Leading Edge Blanking Circuit
Applications
• Current or Voltage Mode Switching Power Supplies
• Motor Speed and Direction Control
Pin Configuration
HS-1825ARH, HS-1825AEH
SBDIP (CDIP2-T16) AND FLATPACK (CDFP4-F16)
TOP VIEW
INV 1
NON-INV 2
E/A OUT 3
CLOCK 4
RT 5
CT 6
RAMP 7
SOFT START 8
16 VREF 5.1V
15 V_CC
14 OUTPUT B
13 VC
12 POWER GND
11 OUTPUT A
10 GND
9 ILIM/SD
NOTE: Grounding the Soft-Start pin does not inhibit the outputs. The outputs may be inhibited by applying >1.26V to the ILIM/SD pin.
May 10, 2012
FN4561.9
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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